Evaluation of polluted degree by heavy metal in soils with entropy weighing fuzzy comprehensive assessment

Abstract

Abstract: Based on the data of heavy metal content in soils from CUMCM 2011, using the spatial analysis functions of the MAPGIS software, the spatial distribution of various heavy metals contour and surface plots are mapped. In order to evaluate the degree of heavy metal pollution of urban areas in different regions, the level of contamination is divided into five levels,that is A, B , C , D and E. It uses entropy method to determine the weight of the eight kinds of pollutants and then fuzzy comprehensive evaluation method is used to evaluate the characteristics of heavy metal pollution in urban soil. The results show that the method is more scientific and rational.

Key words: MAPGIS, kriging interpolation, entropy, fuzzy comprehensive assessment

摘要： 利用2011年全国大学生数学建模竞赛A题所给数据，通过MAPGIS软件的空间分析功能分别绘制了各重金属的空间分布等值线和表面图。为对该城区不同区域的重金属污染程度进行综合评价，将污染等级分为A，B，C，D，E五级，利用熵值法确定了8种污染物的权重，利用模糊综合评价法对不同区域的的重金属污染程度进行了评价，通过实证分析表明该方法是合理、可行的。

关键词: MAPGIS, 克里金空间插值, 熵值, 模糊综合评价

WANG Minggang, ZHU Shouguo, XU Hua. Evaluation of polluted degree by heavy metal in soils with entropy weighing fuzzy comprehensive assessment[J]. Computer Engineering and Applications, 2012, 48(14): 220-225.

王明刚，朱寿国，许华. 土壤重金属污染的熵权模糊综合评价[J]. 计算机工程与应用, 2012, 48(14): 220-225.

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Evaluation of polluted degree by heavy metal in soils with entropy weighing fuzzy comprehensive assessment

土壤重金属污染的熵权模糊综合评价

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